Export only posts from selected category or sub-categories

[zcourts]

I'm trying have only selected categories exported. I thought using one of the filters would allow me to do that but can't seem to make that work.
So I have two questions:

1. Can I use a filter to export only posts in a category or sub-categories thereof? If so, how?
2. Can I disable deletes from github triggering deletes in WP? If a doc is to be deleted I'd either like to do it manually or make it so that only those matching a filter can be deleted

For 1 I've tried:

add_filter('wpghs_pre_fetch_all_supported', function ($supported_post_statuses) {
    return array(
        'category_name' => 'blog'
    );
});

add_filter('wpghs_pre_import_args', function ($supported_post_statuses) {
    return array(
        'category_name' => 'blog'
    );
});

add_filter('wpghs_is_post_supported', function ($supported_post_statuses) {
    return array(
        'category_name' => 'blog'
    );
});

None of which seems to work.
I have pages and posts that I don't want editable via GH and others that I'll allow third parties to edit.

[jrg94]

I need this exact feature.